2021-10-03 22:50:16,381 - octoprint.startup - INFO - ******************************************************************************
2021-10-03 22:50:16,382 - octoprint.startup - INFO - Starting OctoPrint 1.4.0
2021-10-03 22:50:16,382 - octoprint.startup - INFO - ******************************************************************************
2021-10-03 22:50:16,463 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2021-10-03 22:50:17,622 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2021-10-03 22:50:17,755 - octoprint.plugins.octoprint.plugins.discovery - INFO - pybonjour is not installed, Zeroconf Discovery won't be available
2021-10-03 22:50:17,762 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2021-10-03 22:50:17,849 - octoprint.server.heartbeat - INFO - Starting server heartbeat, 900.0s interval
2021-10-03 22:50:17,863 - octoprint.server - INFO - Intermediary server started
2021-10-03 22:50:17,863 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2021-10-03 22:50:17,870 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2021-10-03 22:50:17,895 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2021-10-03 22:50:17,896 - octoprint.printer.profile - ERROR - Profile _default does not exist, creating _default again and setting it as default
2021-10-03 22:50:17,921 - octoprint.filemanager.storage - INFO - Initializing the file metadata for /etc/octoprint/uploads...
2021-10-03 22:50:17,921 - octoprint.filemanager.storage - INFO - ... file metadata for /etc/octoprint/uploads initialized successfully.
2021-10-03 22:50:17,922 - octoprint.server - INFO - Added new permission from plugin action_command_prompt: PLUGIN_ACTION_COMMAND_PROMPT_INTERACT (needs: "Need(method='role', value='plugin_action_command_prompt_interact')")
2021-10-03 22:50:17,923 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_READ (needs: "Need(method='role', value='plugin_announcements_read')")
2021-10-03 22:50:17,923 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_MANAGE (needs: "Need(method='role', value='plugin_announcements_manage'), Need(method='role', value='plugin_announcements_read')")
2021-10-03 22:50:17,923 - octoprint.server - INFO - Added new permission from plugin appkeys: PLUGIN_APPKEYS_ADMIN (needs: "Need(method='role', value='plugin_appkeys_admin')")
2021-10-03 22:50:17,923 - octoprint.server - INFO - Added new permission from plugin backup: PLUGIN_BACKUP_ACCESS (needs: "Need(method='role', value='plugin_backup_access')")
2021-10-03 22:50:17,923 - octoprint.server - INFO - Added new permission from plugin logging: PLUGIN_LOGGING_MANAGE (needs: "Need(method='role', value='plugin_logging_manage')")
2021-10-03 22:50:17,923 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_MANAGE (needs: "Need(method='role', value='plugin_pluginmanager_manage')")
2021-10-03 22:50:17,924 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_INSTALL (needs: "Need(method='role', value='plugin_pluginmanager_install'), Need(method='role', value='plugin_pluginmanager_manage')")
2021-10-03 22:50:17,924 - octoprint.server - INFO - Added new permission from plugin printer_safety_check: PLUGIN_PRINTER_SAFETY_CHECK_DISPLAY (needs: "Need(method='role', value='plugin_printer_safety_check_display')")
2021-10-03 22:50:17,924 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_CHECK (needs: "Need(method='role', value='plugin_softwareupdate_check')")
2021-10-03 22:50:17,924 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_UPDATE (needs: "Need(method='role', value='plugin_softwareupdate_update')")
2021-10-03 22:50:18,835 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-03 22:50:19,696 - octoprint.util.pip - INFO - Version of pip is 20.1
2021-10-03 22:50:19,697 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2021-10-03 22:50:19,698 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-10-03 22:50:19,707 - octoprint.plugin.core - INFO - Initialized 14 plugin implementation(s)
2021-10-03 22:50:19,725 - octoprint.plugin.core - INFO - 14 plugin(s) registered with the system:
|  Action Command Prompt Support (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/action_command_prompt
|  Announcement Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/announcements
|  Anonymous Usage Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/tracking
|  Application Keys Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/appkeys
|  Backup & Restore (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/backup
|  Core Wizard (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/corewizard
|  Discovery (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/discovery
|  Error Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/errortracking
|  Logging (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/logging
|  Login UI (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/loginui
|  Plugin Manager (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/pluginmanager
|  Printer Safety Check (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/printer_safety_check
|  Software Update (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/softwareupdate
|  Virtual Printer (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/virtual_printer
Prefix legend: ! = disabled, # = blacklisted, * = incompatible
2021-10-03 22:50:19,766 - octoprint.environment - INFO - Detected environment is Python 3.6.9 under Linux (linux). Details:
|  hardware:
|      cores: 2
|      freq: 2401.0
|      ram: 3111374848
|  os:
|      id: linux
|      platform: linux
|  python:
|      pip: '20.1'
|      version: 3.6.9
2021-10-03 22:50:19,769 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/webassets...
2021-10-03 22:50:19,770 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/.webassets-cache...
2021-10-03 22:50:20,000 - octoprint.server - INFO - Shutting down intermediary server...
2021-10-03 22:50:20,373 - octoprint.server - INFO - Intermediary server shut down
2021-10-03 22:50:20,375 - octoprint.events - INFO - Processing startup event, this is our first event
2021-10-03 22:50:20,375 - octoprint.events - INFO - Adding 0 events to queue that were held back before startup event
2021-10-03 22:50:20,376 - octoprint.filemanager - INFO - Adding backlog items from all storage types to analysis queue...
2021-10-03 22:50:20,377 - octoprint.filemanager - INFO - Added 0 items from storage type "local" to analysis queue
2021-10-03 22:50:20,378 - octoprint.server.util.watchdog - INFO - Running initial scan on watched folder...
2021-10-03 22:50:20,379 - octoprint.server.util.watchdog - INFO - ... initial scan done.
2021-10-03 22:50:20,382 - octoprint.plugins.discovery - INFO - Registered OctoPrint instance on PC-Ubuntu for SSDP
2021-10-03 22:50:20,384 - octoprint.server - INFO - Listening on http://0.0.0.0:5000 and http://[::]:5000
2021-10-03 22:50:20,638 - octoprint.plugins.announcements - INFO - Loaded channel _important from https://octoprint.org/feeds/important.xml in 0.25s
2021-10-03 22:50:20,692 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from https://plugins.octoprint.org/plugins.json
2021-10-03 22:50:20,841 - octoprint.plugins.announcements - INFO - Loaded channel _releases from https://octoprint.org/feeds/releases.xml in 0.13s
2021-10-03 22:50:21,047 - octoprint.plugins.announcements - INFO - Loaded channel _blog from https://octoprint.org/feeds/octoblog.xml in 0.13s
2021-10-03 22:50:21,282 - octoprint.plugins.announcements - INFO - Loaded channel _plugins from https://plugins.octoprint.org/feed.xml in 0.2s
2021-10-03 22:50:21,373 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-03 22:50:21,373 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2021-10-03 22:50:21,373 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-10-03 22:50:21,454 - octoprint.plugins.announcements - INFO - Loaded channel _octopi from https://octoprint.org/feeds/octopi.xml in 0.12s
2021-10-03 22:50:21,580 - octoprint.plugins.pluginmanager - INFO - Loaded plugin notices data from https://plugins.octoprint.org/notices.json
2021-10-03 22:50:22,404 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-03 22:50:25,721 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/local/lib/python3.6/dist-packages/ (writable -> no), --user flag needed -> no, virtual env -> no
2021-10-03 22:50:25,722 - octoprint.util.pip - INFO - ==> pip ok -> NO!
2021-10-03 22:50:25,722 - octoprint.util.pip - ERROR - Cannot use this pip install, can't write to the install dir and also can't use --user for installing. Check your setup and the permissions on /snap/octoprint-pfs/56/usr/local/lib/python3.6/dist-packages/.
2021-10-03 22:50:25,727 - octoprint.plugins.softwareupdate - INFO - Saved version cache to disk
2021-10-03 22:52:31,835 - octoprint.server.util.flask.PreemptiveCache - INFO - Adding entry for / and {'path': '/', 'base_url': 'http://localhost:5000/', 'query_string': 'l10n=en', '_timestamp': 1633294351.8350394, '_count': 1}
2021-10-03 22:52:38,992 - octoprint.server.util.sockjs - INFO - New connection from client: 127.0.0.1
2021-10-03 22:52:40,396 - tornado.access - WARNING - 403 GET /api/printerprofiles/_default (127.0.0.1) 5.32ms
2021-10-03 22:53:24,442 - octoprint.access.users - INFO - Logged in user: indyana
2021-10-03 22:53:24,443 - octoprint.server.api - INFO - Actively logging in user indyana from 127.0.0.1
2021-10-03 22:53:25,303 - octoprint.server.util.sockjs - INFO - User indyana logged in on the socket from client 127.0.0.1
2021-10-03 22:53:46,013 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 208}
2021-10-03 22:53:46,108 - octoprint.plugins.tracking - INFO - Sent tracking event pong, payload: {'plugins': ''}
2021-10-03 22:53:46,215 - octoprint.plugins.tracking - INFO - Sent tracking event startup, payload: {'version': '1.4.0', 'os': 'linux', 'python': '3.6.9', 'pip': '20.1', 'cores': 2, 'freq': 2401.0, 'ram': 3111374848}
2021-10-03 22:59:41,434 - tornado.access - WARNING - 404 GET /192.168.0.34:8080 (127.0.0.1) 4.28ms
2021-10-03 23:05:18,039 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2021-10-03 23:08:46,587 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 1108}
2021-10-03 23:18:35,208 - octoprint.server.util.sockjs - INFO - Client connection closed: 127.0.0.1
2021-10-03 23:18:35,947 - octoprint.server.util.flask - INFO - Passively logging in user indyana from 127.0.0.1
2021-10-03 23:18:35,979 - octoprint.access.users - INFO - Logged in user: indyana
2021-10-03 23:18:40,073 - octoprint.server.util.sockjs - INFO - New connection from client: 127.0.0.1
2021-10-03 23:18:40,317 - octoprint.server.util.flask - INFO - Passively logging in user indyana from 127.0.0.1
2021-10-03 23:18:40,317 - octoprint.access.users - INFO - Logged in user: indyana
2021-10-03 23:18:40,497 - octoprint.server.util.sockjs - INFO - Client connection closed: 127.0.0.1
2021-10-03 23:18:45,045 - octoprint.server.util.sockjs - INFO - New connection from client: 127.0.0.1
2021-10-03 23:18:45,083 - octoprint.server.util.flask - INFO - Passively logging in user indyana from 127.0.0.1
2021-10-03 23:18:45,083 - octoprint.access.users - INFO - Logged in user: indyana
2021-10-03 23:18:46,420 - octoprint.server.util.sockjs - INFO - User indyana logged in on the socket from client 127.0.0.1
2021-10-03 23:20:19,536 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2021-10-03 23:22:58,299 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial port"
2021-10-03 23:22:58,314 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyUSB0: 'Failed to open serial port'
2021-10-03 23:22:58,315 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS4: 'Failed to open serial port'
2021-10-03 23:22:58,316 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS31: 'Failed to open serial port'
2021-10-03 23:22:58,317 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS30: 'Failed to open serial port'
2021-10-03 23:22:58,318 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS29: 'Failed to open serial port'
2021-10-03 23:22:58,319 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS28: 'Failed to open serial port'
2021-10-03 23:22:58,321 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS27: 'Failed to open serial port'
2021-10-03 23:22:58,322 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS26: 'Failed to open serial port'
2021-10-03 23:22:58,323 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS25: 'Failed to open serial port'
2021-10-03 23:22:58,324 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS24: 'Failed to open serial port'
2021-10-03 23:22:58,325 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS23: 'Failed to open serial port'
2021-10-03 23:22:58,327 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS22: 'Failed to open serial port'
2021-10-03 23:22:58,341 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS21: 'Failed to open serial port'
2021-10-03 23:22:58,342 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS20: 'Failed to open serial port'
2021-10-03 23:22:58,343 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS19: 'Failed to open serial port'
2021-10-03 23:22:58,344 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS18: 'Failed to open serial port'
2021-10-03 23:22:58,345 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS17: 'Failed to open serial port'
2021-10-03 23:22:58,346 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS16: 'Failed to open serial port'
2021-10-03 23:22:58,346 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS15: 'Failed to open serial port'
2021-10-03 23:22:58,347 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS14: 'Failed to open serial port'
2021-10-03 23:22:58,348 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS13: 'Failed to open serial port'
2021-10-03 23:22:58,349 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS12: 'Failed to open serial port'
2021-10-03 23:22:58,350 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS11: 'Failed to open serial port'
2021-10-03 23:22:58,351 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS10: 'Failed to open serial port'
2021-10-03 23:22:58,351 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS9: 'Failed to open serial port'
2021-10-03 23:22:58,352 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS8: 'Failed to open serial port'
2021-10-03 23:22:58,353 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS7: 'Failed to open serial port'
2021-10-03 23:22:58,353 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS6: 'Failed to open serial port'
2021-10-03 23:22:58,354 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS5: 'Failed to open serial port'
2021-10-03 23:22:58,355 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS3: 'Failed to open serial port'
2021-10-03 23:22:58,355 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS2: 'Failed to open serial port'
2021-10-03 23:22:58,356 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS1: 'Failed to open serial port'
2021-10-03 23:22:58,357 - octoprint.util.comm - INFO - Could not enter programming mode on /dev/ttyS0: 'Failed to open serial port'
2021-10-03 23:22:58,357 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial port" to "Error: Failed to autodetect serial port, please set it manually."
2021-10-03 23:22:58,448 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_autodetect_port, payload: {'commerror_text': 'Failed to autodetect serial port, please set it manually.'}
2021-10-03 23:23:45,974 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 2008}
2021-10-03 23:24:20,900 - octoprint.server.util.sockjs - INFO - Client connection closed: 127.0.0.1
2021-10-04 19:53:40,049 - octoprint.util.connectivity_checker - INFO - Connectivity changed from online to offline
2021-10-04 19:53:40,050 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2021-10-04 19:57:42,974 - octoprint.startup - INFO - ******************************************************************************
2021-10-04 19:57:42,975 - octoprint.startup - INFO - Starting OctoPrint 1.4.0
2021-10-04 19:57:43,001 - octoprint.startup - INFO - ******************************************************************************
2021-10-04 19:57:43,093 - octoprint.startup - INFO - We don't appear to be online, not fetching plugin blacklist
2021-10-04 19:57:43,220 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2021-10-04 19:57:44,715 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2021-10-04 19:57:44,845 - octoprint.plugins.octoprint.plugins.discovery - INFO - pybonjour is not installed, Zeroconf Discovery won't be available
2021-10-04 19:57:44,848 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2021-10-04 19:57:44,954 - octoprint.server.heartbeat - INFO - Starting server heartbeat, 900.0s interval
2021-10-04 19:57:44,969 - octoprint.server - INFO - Intermediary server started
2021-10-04 19:57:44,969 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2021-10-04 19:57:44,976 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2021-10-04 19:57:45,001 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2021-10-04 19:57:45,049 - octoprint.filemanager.storage - INFO - Initializing the file metadata for /etc/octoprint/uploads...
2021-10-04 19:57:45,050 - octoprint.filemanager.storage - INFO - ... file metadata for /etc/octoprint/uploads initialized successfully.
2021-10-04 19:57:45,051 - octoprint.server - INFO - Added new permission from plugin action_command_prompt: PLUGIN_ACTION_COMMAND_PROMPT_INTERACT (needs: "Need(method='role', value='plugin_action_command_prompt_interact')")
2021-10-04 19:57:45,051 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_READ (needs: "Need(method='role', value='plugin_announcements_read')")
2021-10-04 19:57:45,051 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_MANAGE (needs: "Need(method='role', value='plugin_announcements_manage'), Need(method='role', value='plugin_announcements_read')")
2021-10-04 19:57:45,051 - octoprint.server - INFO - Added new permission from plugin appkeys: PLUGIN_APPKEYS_ADMIN (needs: "Need(method='role', value='plugin_appkeys_admin')")
2021-10-04 19:57:45,052 - octoprint.server - INFO - Added new permission from plugin backup: PLUGIN_BACKUP_ACCESS (needs: "Need(method='role', value='plugin_backup_access')")
2021-10-04 19:57:45,052 - octoprint.server - INFO - Added new permission from plugin logging: PLUGIN_LOGGING_MANAGE (needs: "Need(method='role', value='plugin_logging_manage')")
2021-10-04 19:57:45,052 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_MANAGE (needs: "Need(method='role', value='plugin_pluginmanager_manage')")
2021-10-04 19:57:45,052 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_INSTALL (needs: "Need(method='role', value='plugin_pluginmanager_manage'), Need(method='role', value='plugin_pluginmanager_install')")
2021-10-04 19:57:45,052 - octoprint.server - INFO - Added new permission from plugin printer_safety_check: PLUGIN_PRINTER_SAFETY_CHECK_DISPLAY (needs: "Need(method='role', value='plugin_printer_safety_check_display')")
2021-10-04 19:57:45,052 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_CHECK (needs: "Need(method='role', value='plugin_softwareupdate_check')")
2021-10-04 19:57:45,053 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_UPDATE (needs: "Need(method='role', value='plugin_softwareupdate_update')")
2021-10-04 19:57:46,042 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-04 19:57:47,038 - octoprint.util.pip - INFO - Version of pip is 20.1
2021-10-04 19:57:47,039 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2021-10-04 19:57:47,040 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-10-04 19:57:47,246 - octoprint.plugins.softwareupdate - INFO - Loaded version cache from disk
2021-10-04 19:57:47,251 - octoprint.plugin.core - INFO - Initialized 14 plugin implementation(s)
2021-10-04 19:57:47,261 - octoprint.plugin.core - INFO - 14 plugin(s) registered with the system:
|  Action Command Prompt Support (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/action_command_prompt
|  Announcement Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/announcements
|  Anonymous Usage Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/tracking
|  Application Keys Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/appkeys
|  Backup & Restore (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/backup
|  Core Wizard (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/corewizard
|  Discovery (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/discovery
|  Error Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/errortracking
|  Logging (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/logging
|  Login UI (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/loginui
|  Plugin Manager (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/pluginmanager
|  Printer Safety Check (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/printer_safety_check
|  Software Update (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/softwareupdate
|  Virtual Printer (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/virtual_printer
Prefix legend: ! = disabled, # = blacklisted, * = incompatible
2021-10-04 19:57:47,335 - octoprint.environment - INFO - Detected environment is Python 3.6.9 under Linux (linux). Details:
|  hardware:
|      cores: 2
|      freq: 2401.0
|      ram: 3111374848
|  os:
|      id: linux
|      platform: linux
|  python:
|      pip: '20.1'
|      version: 3.6.9
2021-10-04 19:57:47,391 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/webassets...
2021-10-04 19:57:47,520 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/.webassets-cache...
2021-10-04 19:57:47,800 - octoprint.server - INFO - Shutting down intermediary server...
2021-10-04 19:57:47,973 - octoprint.server - INFO - Intermediary server shut down
2021-10-04 19:57:48,001 - octoprint.events - INFO - Processing startup event, this is our first event
2021-10-04 19:57:48,001 - octoprint.events - INFO - Adding 0 events to queue that were held back before startup event
2021-10-04 19:57:48,003 - octoprint.filemanager - INFO - Adding backlog items from all storage types to analysis queue...
2021-10-04 19:57:48,005 - octoprint.filemanager - INFO - Added 0 items from storage type "local" to analysis queue
2021-10-04 19:57:48,006 - octoprint.server.util.watchdog - INFO - Running initial scan on watched folder...
2021-10-04 19:57:48,007 - octoprint.server.util.watchdog - INFO - ... initial scan done.
2021-10-04 19:57:48,011 - octoprint.server - INFO - Listening on http://0.0.0.0:5000 and http://[::]:5000
2021-10-04 19:57:48,024 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _important from network
2021-10-04 19:57:48,025 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _releases from network
2021-10-04 19:57:48,025 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _blog from network
2021-10-04 19:57:48,025 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _plugins from network
2021-10-04 19:57:48,025 - octoprint.plugins.announcements - INFO - Looks like we are offline, can't fetch announcements for channel _octopi from network
2021-10-04 19:57:48,059 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2021-10-04 19:57:48,803 - octoprint.plugins.pluginmanager - INFO - Looks like we are offline, can't fetch notices from network
2021-10-04 19:57:49,187 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-04 19:57:49,188 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2021-10-04 19:57:49,188 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-10-04 19:57:50,082 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-04 19:57:55,706 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/local/lib/python3.6/dist-packages/ (writable -> no), --user flag needed -> no, virtual env -> no
2021-10-04 19:57:55,707 - octoprint.util.pip - INFO - ==> pip ok -> NO!
2021-10-04 19:57:55,707 - octoprint.util.pip - ERROR - Cannot use this pip install, can't write to the install dir and also can't use --user for installing. Check your setup and the permissions on /snap/octoprint-pfs/56/usr/local/lib/python3.6/dist-packages/.
2021-10-04 19:57:55,760 - octoprint.plugins.softwareupdate - INFO - Saved version cache to disk
2021-10-04 19:57:56,058 - octoprint.server.preemptive_cache - INFO - Preemptively caching / (ui _default) for {'base_url': 'http://localhost:5000/', 'path': '/', 'query_string': 'l10n=en'}
2021-10-04 19:58:01,245 - octoprint.server.preemptive_cache - INFO - ... done in 5.19s
2021-10-04 20:01:41,702 - octoprint.server.util.sockjs - INFO - New connection from client: 127.0.0.1
2021-10-04 20:01:41,736 - octoprint.server.util.flask - INFO - Passively logging in user indyana from 127.0.0.1
2021-10-04 20:01:41,737 - octoprint.access.users - INFO - Logged in user: indyana
2021-10-04 20:01:44,683 - octoprint.server.util.sockjs - INFO - User indyana logged in on the socket from client 127.0.0.1
2021-10-04 20:01:44,853 - octoprint.plugins.pluginmanager - INFO - Looks like we are offline, can't fetch notices from network
2021-10-04 20:01:44,963 - octoprint.util.connectivity_checker - INFO - Connectivity changed from offline to online
2021-10-04 20:01:44,983 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2021-10-04 20:01:45,371 - octoprint.plugins.announcements - INFO - Loaded channel _important from https://octoprint.org/feeds/important.xml in 0.38s
2021-10-04 20:01:45,586 - octoprint.plugins.softwareupdate - INFO - Saved version cache to disk
2021-10-04 20:01:45,692 - octoprint.plugins.announcements - INFO - Loaded channel _releases from https://octoprint.org/feeds/releases.xml in 0.16s
2021-10-04 20:01:46,018 - octoprint.plugins.announcements - INFO - Loaded channel _blog from https://octoprint.org/feeds/octoblog.xml in 0.17s
2021-10-04 20:01:46,036 - octoprint.plugins.announcements - INFO - Loaded channel _blog from https://octoprint.org/feeds/octoblog.xml in 0.23s
2021-10-04 20:01:46,238 - octoprint.plugins.announcements - INFO - Loaded channel _plugins from https://plugins.octoprint.org/feed.xml in 0.14s
2021-10-04 20:01:46,258 - octoprint.plugins.announcements - INFO - Loaded channel _plugins from https://plugins.octoprint.org/feed.xml in 0.18s
2021-10-04 20:01:46,461 - octoprint.plugins.announcements - INFO - Loaded channel _octopi from https://octoprint.org/feeds/octopi.xml in 0.12s
2021-10-04 20:01:46,494 - octoprint.plugins.announcements - INFO - Loaded channel _octopi from https://octoprint.org/feeds/octopi.xml in 0.15s
2021-10-04 20:01:46,509 - octoprint.plugins.pluginmanager - INFO - Loaded plugin notices data from https://plugins.octoprint.org/notices.json
2021-10-04 20:02:10,327 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:02:10,328 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS0 SerialException: '[Errno 13] could not open port /dev/ttyS0: [Errno 13] Permission denied: '/dev/ttyS0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS0: [Errno 13] Permission denied: '/dev/ttyS0'
2021-10-04 20:02:10,481 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:02:15,066 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:02:15,067 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS1 SerialException: '[Errno 13] could not open port /dev/ttyS1: [Errno 13] Permission denied: '/dev/ttyS1'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS1'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS1: [Errno 13] Permission denied: '/dev/ttyS1'
2021-10-04 20:02:15,167 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:05:48,989 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:05:48,989 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS5 SerialException: '[Errno 13] could not open port /dev/ttyS5: [Errno 13] Permission denied: '/dev/ttyS5'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS5'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS5: [Errno 13] Permission denied: '/dev/ttyS5'
2021-10-04 20:05:49,099 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:06:00,658 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:06:00,658 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:06:00,761 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:01,227 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:01,228 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:12:01,406 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:44,964 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2021-10-04 20:12:45,375 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:45,375 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:12:45,483 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:49,290 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:49,292 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS0 SerialException: '[Errno 13] could not open port /dev/ttyS0: [Errno 13] Permission denied: '/dev/ttyS0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS0: [Errno 13] Permission denied: '/dev/ttyS0'
2021-10-04 20:12:49,400 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:51,641 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:51,642 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS1 SerialException: '[Errno 13] could not open port /dev/ttyS1: [Errno 13] Permission denied: '/dev/ttyS1'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS1'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS1: [Errno 13] Permission denied: '/dev/ttyS1'
2021-10-04 20:12:51,755 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:54,340 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:54,341 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS2 SerialException: '[Errno 13] could not open port /dev/ttyS2: [Errno 13] Permission denied: '/dev/ttyS2'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS2: [Errno 13] Permission denied: '/dev/ttyS2'
2021-10-04 20:12:54,455 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:55,834 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 912}
2021-10-04 20:12:56,995 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:56,995 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS3 SerialException: '[Errno 13] could not open port /dev/ttyS3: [Errno 13] Permission denied: '/dev/ttyS3'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS3'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS3: [Errno 13] Permission denied: '/dev/ttyS3'
2021-10-04 20:12:57,122 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:12:59,416 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:12:59,417 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS4 SerialException: '[Errno 13] could not open port /dev/ttyS4: [Errno 13] Permission denied: '/dev/ttyS4'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS4'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS4: [Errno 13] Permission denied: '/dev/ttyS4'
2021-10-04 20:12:59,542 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:01,754 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:01,754 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS5 SerialException: '[Errno 13] could not open port /dev/ttyS5: [Errno 13] Permission denied: '/dev/ttyS5'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS5'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS5: [Errno 13] Permission denied: '/dev/ttyS5'
2021-10-04 20:13:01,876 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:04,126 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:04,127 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS6 SerialException: '[Errno 13] could not open port /dev/ttyS6: [Errno 13] Permission denied: '/dev/ttyS6'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS6'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS6: [Errno 13] Permission denied: '/dev/ttyS6'
2021-10-04 20:13:04,267 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:06,457 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:06,458 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS7 SerialException: '[Errno 13] could not open port /dev/ttyS7: [Errno 13] Permission denied: '/dev/ttyS7'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS7'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS7: [Errno 13] Permission denied: '/dev/ttyS7'
2021-10-04 20:13:06,579 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:08,708 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:08,709 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS8 SerialException: '[Errno 13] could not open port /dev/ttyS8: [Errno 13] Permission denied: '/dev/ttyS8'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS8'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS8: [Errno 13] Permission denied: '/dev/ttyS8'
2021-10-04 20:13:08,809 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:11,118 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:11,118 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS9 SerialException: '[Errno 13] could not open port /dev/ttyS9: [Errno 13] Permission denied: '/dev/ttyS9'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS9'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS9: [Errno 13] Permission denied: '/dev/ttyS9'
2021-10-04 20:13:11,239 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:15,178 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:15,178 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS10 SerialException: '[Errno 13] could not open port /dev/ttyS10: [Errno 13] Permission denied: '/dev/ttyS10'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS10'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS10: [Errno 13] Permission denied: '/dev/ttyS10'
2021-10-04 20:13:15,316 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:18,045 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:18,046 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS11 SerialException: '[Errno 13] could not open port /dev/ttyS11: [Errno 13] Permission denied: '/dev/ttyS11'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS11'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS11: [Errno 13] Permission denied: '/dev/ttyS11'
2021-10-04 20:13:18,164 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:23,404 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:23,405 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS12 SerialException: '[Errno 13] could not open port /dev/ttyS12: [Errno 13] Permission denied: '/dev/ttyS12'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS12'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS12: [Errno 13] Permission denied: '/dev/ttyS12'
2021-10-04 20:13:23,504 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:26,285 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:26,285 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS13 SerialException: '[Errno 13] could not open port /dev/ttyS13: [Errno 13] Permission denied: '/dev/ttyS13'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS13'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS13: [Errno 13] Permission denied: '/dev/ttyS13'
2021-10-04 20:13:26,393 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:29,223 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:29,223 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS14 SerialException: '[Errno 13] could not open port /dev/ttyS14: [Errno 13] Permission denied: '/dev/ttyS14'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS14'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS14: [Errno 13] Permission denied: '/dev/ttyS14'
2021-10-04 20:13:29,331 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:32,574 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:32,575 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS15 SerialException: '[Errno 13] could not open port /dev/ttyS15: [Errno 13] Permission denied: '/dev/ttyS15'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS15'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS15: [Errno 13] Permission denied: '/dev/ttyS15'
2021-10-04 20:13:32,693 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:35,466 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:35,466 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS16 SerialException: '[Errno 13] could not open port /dev/ttyS16: [Errno 13] Permission denied: '/dev/ttyS16'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS16'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS16: [Errno 13] Permission denied: '/dev/ttyS16'
2021-10-04 20:13:35,569 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:39,054 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:39,054 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS17 SerialException: '[Errno 13] could not open port /dev/ttyS17: [Errno 13] Permission denied: '/dev/ttyS17'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS17'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS17: [Errno 13] Permission denied: '/dev/ttyS17'
2021-10-04 20:13:39,157 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:41,655 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:41,655 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS18 SerialException: '[Errno 13] could not open port /dev/ttyS18: [Errno 13] Permission denied: '/dev/ttyS18'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS18'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS18: [Errno 13] Permission denied: '/dev/ttyS18'
2021-10-04 20:13:41,755 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:45,182 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:45,183 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS19 SerialException: '[Errno 13] could not open port /dev/ttyS19: [Errno 13] Permission denied: '/dev/ttyS19'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS19'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS19: [Errno 13] Permission denied: '/dev/ttyS19'
2021-10-04 20:13:45,282 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:48,680 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:48,681 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS20 SerialException: '[Errno 13] could not open port /dev/ttyS20: [Errno 13] Permission denied: '/dev/ttyS20'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS20'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS20: [Errno 13] Permission denied: '/dev/ttyS20'
2021-10-04 20:13:48,783 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:51,670 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:51,670 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS21 SerialException: '[Errno 13] could not open port /dev/ttyS21: [Errno 13] Permission denied: '/dev/ttyS21'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS21'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS21: [Errno 13] Permission denied: '/dev/ttyS21'
2021-10-04 20:13:51,780 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:55,564 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:55,565 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS22 SerialException: '[Errno 13] could not open port /dev/ttyS22: [Errno 13] Permission denied: '/dev/ttyS22'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS22'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS22: [Errno 13] Permission denied: '/dev/ttyS22'
2021-10-04 20:13:55,691 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:13:58,903 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:13:58,904 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS23 SerialException: '[Errno 13] could not open port /dev/ttyS23: [Errno 13] Permission denied: '/dev/ttyS23'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS23'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS23: [Errno 13] Permission denied: '/dev/ttyS23'
2021-10-04 20:13:59,025 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:02,413 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:02,413 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS24 SerialException: '[Errno 13] could not open port /dev/ttyS24: [Errno 13] Permission denied: '/dev/ttyS24'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS24'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS24: [Errno 13] Permission denied: '/dev/ttyS24'
2021-10-04 20:14:02,533 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:05,812 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:05,813 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS25 SerialException: '[Errno 13] could not open port /dev/ttyS25: [Errno 13] Permission denied: '/dev/ttyS25'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS25'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS25: [Errno 13] Permission denied: '/dev/ttyS25'
2021-10-04 20:14:05,929 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:09,294 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:09,296 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS26 SerialException: '[Errno 13] could not open port /dev/ttyS26: [Errno 13] Permission denied: '/dev/ttyS26'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS26'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS26: [Errno 13] Permission denied: '/dev/ttyS26'
2021-10-04 20:14:09,412 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:12,337 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:12,338 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS27 SerialException: '[Errno 13] could not open port /dev/ttyS27: [Errno 13] Permission denied: '/dev/ttyS27'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS27'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS27: [Errno 13] Permission denied: '/dev/ttyS27'
2021-10-04 20:14:12,441 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:15,628 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:15,628 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS28 SerialException: '[Errno 13] could not open port /dev/ttyS28: [Errno 13] Permission denied: '/dev/ttyS28'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS28'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS28: [Errno 13] Permission denied: '/dev/ttyS28'
2021-10-04 20:14:15,746 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:19,736 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:19,737 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS29 SerialException: '[Errno 13] could not open port /dev/ttyS29: [Errno 13] Permission denied: '/dev/ttyS29'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS29'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS29: [Errno 13] Permission denied: '/dev/ttyS29'
2021-10-04 20:14:19,862 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:22,543 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:22,544 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS30 SerialException: '[Errno 13] could not open port /dev/ttyS30: [Errno 13] Permission denied: '/dev/ttyS30'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS30'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS30: [Errno 13] Permission denied: '/dev/ttyS30'
2021-10-04 20:14:22,667 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:26,271 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:26,271 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyS31 SerialException: '[Errno 13] could not open port /dev/ttyS31: [Errno 13] Permission denied: '/dev/ttyS31'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyS31'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyS31: [Errno 13] Permission denied: '/dev/ttyS31'
2021-10-04 20:14:26,386 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:29,686 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:29,686 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:14:29,808 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:14:44,305 - octoprint.server.api.system - INFO - Performing command for core:restart: restart
2021-10-04 20:14:44,405 - octoprint.server.api.system - WARNING - Command for core:restart failed with return code 127:
! STDOUT: 
! STDERR: /bin/sh: 1: restart: not found
2021-10-04 20:14:49,522 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:14:49,523 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:14:49,645 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:18:57,624 - octoprint.server.util.sockjs - INFO - Client connection closed: 127.0.0.1
2021-10-04 20:19:28,863 - octoprint.server - INFO - Shutting down...
2021-10-04 20:19:29,377 - octoprint.events - INFO - Processing shutdown event, this will be our last event
2021-10-04 20:19:29,378 - octoprint.events - INFO - Event loop shut down
2021-10-04 20:19:29,381 - octoprint.server - INFO - Goodbye!
2021-10-04 20:22:05,861 - octoprint.startup - INFO - ******************************************************************************
2021-10-04 20:22:05,863 - octoprint.startup - INFO - Starting OctoPrint 1.4.0
2021-10-04 20:22:05,918 - octoprint.startup - INFO - ******************************************************************************
2021-10-04 20:22:06,912 - octoprint.util.connectivity_checker - INFO - Connectivity changed from offline to online
2021-10-04 20:22:07,248 - octoprint.startup - INFO - Blacklist processing done, adding 1 blacklisted plugin versions: roomtemp (any)
2021-10-04 20:22:07,415 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2021-10-04 20:22:09,260 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2021-10-04 20:22:09,437 - octoprint.plugins.octoprint.plugins.discovery - INFO - pybonjour is not installed, Zeroconf Discovery won't be available
2021-10-04 20:22:09,440 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2021-10-04 20:22:09,786 - octoprint.server.heartbeat - INFO - Starting server heartbeat, 900.0s interval
2021-10-04 20:22:09,828 - octoprint.server - INFO - Intermediary server started
2021-10-04 20:22:09,828 - octoprint.plugin.core - INFO - Loading plugins from /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins, /etc/octoprint/plugins and installed plugin packages...
2021-10-04 20:22:09,836 - octoprint.plugin.core - INFO - Plugin Pi Support Plugin did not pass check, not loading.
2021-10-04 20:22:09,860 - octoprint.plugin.core - INFO - Found 14 plugin(s) providing 14 mixin implementations, 25 hook handlers
2021-10-04 20:22:09,897 - octoprint.filemanager.storage - INFO - Initializing the file metadata for /etc/octoprint/uploads...
2021-10-04 20:22:09,897 - octoprint.filemanager.storage - INFO - ... file metadata for /etc/octoprint/uploads initialized successfully.
2021-10-04 20:22:09,898 - octoprint.server - INFO - Added new permission from plugin action_command_prompt: PLUGIN_ACTION_COMMAND_PROMPT_INTERACT (needs: "Need(method='role', value='plugin_action_command_prompt_interact')")
2021-10-04 20:22:09,899 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_READ (needs: "Need(method='role', value='plugin_announcements_read')")
2021-10-04 20:22:09,900 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_MANAGE (needs: "Need(method='role', value='plugin_announcements_read'), Need(method='role', value='plugin_announcements_manage')")
2021-10-04 20:22:09,900 - octoprint.server - INFO - Added new permission from plugin appkeys: PLUGIN_APPKEYS_ADMIN (needs: "Need(method='role', value='plugin_appkeys_admin')")
2021-10-04 20:22:09,900 - octoprint.server - INFO - Added new permission from plugin backup: PLUGIN_BACKUP_ACCESS (needs: "Need(method='role', value='plugin_backup_access')")
2021-10-04 20:22:09,900 - octoprint.server - INFO - Added new permission from plugin logging: PLUGIN_LOGGING_MANAGE (needs: "Need(method='role', value='plugin_logging_manage')")
2021-10-04 20:22:09,900 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_MANAGE (needs: "Need(method='role', value='plugin_pluginmanager_manage')")
2021-10-04 20:22:09,901 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_INSTALL (needs: "Need(method='role', value='plugin_pluginmanager_manage'), Need(method='role', value='plugin_pluginmanager_install')")
2021-10-04 20:22:09,901 - octoprint.server - INFO - Added new permission from plugin printer_safety_check: PLUGIN_PRINTER_SAFETY_CHECK_DISPLAY (needs: "Need(method='role', value='plugin_printer_safety_check_display')")
2021-10-04 20:22:09,901 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_CHECK (needs: "Need(method='role', value='plugin_softwareupdate_check')")
2021-10-04 20:22:09,901 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_UPDATE (needs: "Need(method='role', value='plugin_softwareupdate_update')")
2021-10-04 20:22:11,106 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-04 20:22:11,990 - octoprint.util.pip - INFO - Version of pip is 20.1
2021-10-04 20:22:11,991 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2021-10-04 20:22:11,991 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-10-04 20:22:12,077 - octoprint.plugins.softwareupdate - INFO - Loaded version cache from disk
2021-10-04 20:22:12,081 - octoprint.plugin.core - INFO - Initialized 14 plugin implementation(s)
2021-10-04 20:22:12,090 - octoprint.plugin.core - INFO - 14 plugin(s) registered with the system:
|  Action Command Prompt Support (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/action_command_prompt
|  Announcement Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/announcements
|  Anonymous Usage Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/tracking
|  Application Keys Plugin (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/appkeys
|  Backup & Restore (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/backup
|  Core Wizard (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/corewizard
|  Discovery (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/discovery
|  Error Tracking (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/errortracking
|  Logging (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/logging
|  Login UI (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/loginui
|  Plugin Manager (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/pluginmanager
|  Printer Safety Check (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/printer_safety_check
|  Software Update (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/softwareupdate
|  Virtual Printer (bundled) = /snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/plugins/virtual_printer
Prefix legend: ! = disabled, # = blacklisted, * = incompatible
2021-10-04 20:22:12,135 - octoprint.environment - INFO - Detected environment is Python 3.6.9 under Linux (linux). Details:
|  hardware:
|      cores: 2
|      freq: 2401.0
|      ram: 3111374848
|  os:
|      id: linux
|      platform: linux
|  python:
|      pip: '20.1'
|      version: 3.6.9
2021-10-04 20:22:12,197 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/webassets...
2021-10-04 20:22:12,289 - octoprint.server - INFO - Reset webasset folder /etc/octoprint/generated/.webassets-cache...
2021-10-04 20:22:12,532 - octoprint.server - INFO - Shutting down intermediary server...
2021-10-04 20:22:12,840 - octoprint.server - INFO - Intermediary server shut down
2021-10-04 20:22:12,843 - octoprint.events - INFO - Processing startup event, this is our first event
2021-10-04 20:22:12,843 - octoprint.events - INFO - Adding 1 events to queue that were held back before startup event
2021-10-04 20:22:12,849 - octoprint.filemanager - INFO - Adding backlog items from all storage types to analysis queue...
2021-10-04 20:22:12,850 - octoprint.server - INFO - Autoconnect on startup is configured, trying to connect to the printer...
2021-10-04 20:22:12,852 - octoprint.filemanager - INFO - Added 0 items from storage type "local" to analysis queue
2021-10-04 20:22:12,884 - octoprint.server - INFO - Trying to connect to configured serial port /dev/ttyUSB0
2021-10-04 20:22:12,905 - octoprint.server.util.watchdog - INFO - Running initial scan on watched folder...
2021-10-04 20:22:12,907 - octoprint.server.util.watchdog - INFO - ... initial scan done.
2021-10-04 20:22:12,909 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:22:12,909 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:22:12,920 - octoprint.plugins.discovery - INFO - Registered OctoPrint instance on PC-Ubuntu for SSDP
2021-10-04 20:22:12,922 - octoprint.server - INFO - Listening on http://0.0.0.0:5000 and http://[::]:5000
2021-10-04 20:22:12,962 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2021-10-04 20:22:12,970 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2021-10-04 20:22:13,152 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:22:14,068 - octoprint.util.pip - INFO - Using "/snap/octoprint-pfs/56/usr/bin/python3 -m pip" as command to invoke pip
2021-10-04 20:22:14,079 - octoprint.util.pip - INFO - pip installs to /snap/octoprint-pfs/56/usr/lib/python3/dist-packages (writable -> yes), --user flag needed -> no, virtual env -> no
2021-10-04 20:22:14,096 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-10-04 20:22:14,239 - octoprint.plugins.pluginmanager - INFO - Loaded notice data from disk, was still valid
2021-10-04 20:22:14,311 - octoprint.plugins.pluginmanager - INFO - Loaded notice data from disk, was still valid
2021-10-04 20:22:14,354 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 4}
2021-10-04 20:22:14,435 - octoprint.plugins.tracking - INFO - Sent tracking event pong, payload: {'plugins': ''}
2021-10-04 20:22:14,491 - octoprint.server.preemptive_cache - INFO - Preemptively caching / (ui _default) for {'base_url': 'http://localhost:5000/', 'path': '/', 'query_string': 'l10n=en'}
2021-10-04 20:22:14,552 - octoprint.plugins.tracking - INFO - Sent tracking event startup, payload: {'version': '1.4.0', 'os': 'linux', 'python': '3.6.9', 'pip': '20.1', 'cores': 2, 'freq': 2401.0, 'ram': 3111374848}
2021-10-04 20:22:18,190 - octoprint.server.preemptive_cache - INFO - ... done in 3.70s
2021-10-04 20:25:29,530 - octoprint.server.util.sockjs - INFO - New connection from client: 127.0.0.1
2021-10-04 20:25:29,575 - octoprint.server.util.flask - INFO - Passively logging in user indyana from 127.0.0.1
2021-10-04 20:25:29,576 - octoprint.access.users - INFO - Logged in user: indyana
2021-10-04 20:25:31,043 - octoprint.server.util.sockjs - INFO - User indyana logged in on the socket from client 127.0.0.1
2021-10-04 20:25:40,502 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:25:40,503 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:25:40,618 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:36:03,880 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:36:03,881 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:36:04,049 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:37:09,787 - octoprint.server.heartbeat - INFO - Server heartbeat <3
2021-10-04 20:37:14,264 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 904}
2021-10-04 20:37:58,721 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Error: Connection error, see Terminal tab"
2021-10-04 20:37:58,721 - octoprint.util.comm - ERROR - Unexpected error while connecting to serial port: /dev/ttyUSB0 SerialException: '[Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'' @ comm.py:_openSerial:2691 (hook default)
Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 265, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
PermissionError: [Errno 13] Permission denied: '/dev/ttyUSB0'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2691, in _openSerial
    serial_obj = factory(self, self._port, self._baudrate, settings().getFloat(["serial", "timeout", "connection"]))
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/octoprint/util/comm.py", line 2671, in default
    serial_obj.open()
  File "/snap/octoprint-pfs/56/lib/python3.6/site-packages/serial/serialposix.py", line 268, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
2021-10-04 20:37:58,844 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_connection, payload: {'commerror_text': 'Connection error, see Terminal tab'}
2021-10-04 20:42:04,969 - octoprint.server.util.sockjs - INFO - Client connection closed: 127.0.0.1